Springer Biographies
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Wolfgang W. Osterhage Galileo Galilei At the Threshold of the Scientific Age 123
Wolfgang W. Osterhage Wachtberg, Nordrhein-Westfalen Germany ISSN 2365-0613 ISSN 2365-0621 (electronic) Springer Biographies ISBN 978-3-319-91778-8 ISBN 978-3-319-91779-5 (ebook) https://doi.org/10.1007/978-3-319-91779-5 Library of Congress Control Number: 2018942624 Springer International Publishing AG, part of Springer Nature 2018 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Printed on acid-free paper This Springer imprint is published by the registered company Springer International Publishing AG part of Springer Nature The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland
Preface Why another book about Galileo? To most readers, his achievements, his life, and his conflict with the church authorities are well known. This book, however, tries to put the complex personality of Galileo into a different perspective. Although it still follows the stations of his life in their historical sequence, it relates his discoveries and theories to today s scientific developments in major fields of physics on the one hand and to ancient teachings on the other hand. Galileo s most important publications are discussed in detail. The book starts with a broad description of major historical events during Galileo s lifetime, followed by a recounting of his early years in Pisa and his gravitational experiments there. During his time in Padua, he made his first important astronomical discoveries, which led to a first conflict with the church authorities later during his stay in Florence. At the centre of this conflict as is well known was his interest in the Copernican world model. At this stage, a general outline is given of the development of cosmological world models from the ancient Greeks over Ptolemy and Copernicus up to our Standard Big Bang Model. The climax of Galileo s conflict was triggered by the publication of his Dialogo. The narrative of the book concludes with a summary of his work in his final years in semi-exile in the countryside near Florence,followed by an assessment of the impact of his work for science in general and today s outlook in particular. At the end, an exhaustive timetable containing the most important historical and scientific events including those of Galileo s life is presented. There is also a table of references used in the book. Most of the letters referred to in the text and some of the passages from his publications have been taken from A. Mudry, Galileo Galilei: Schriften, Briefe, Dokumente, Berlin, 1985, and retranslated by myself. Other facts about Galileo s life and circumstances can be found under Galileo.rice.edu. My thanks go to Springer International Publishing for making this book possible in the first place. Special thanks are due to Dr. Angela Lahee for her patience, Ute Heuser, and Stephen Pfeiffer for his critical language review. Wachtberg, Germany May 2018 Wolfgang W. Osterhage v
Contents 1 Introduction... 1 The Anthropic Principle... 2 This Book... 5 2 Time and Space (1564 1642)... 7 The Time of Witch Hunts... 7 The French Wars of Religion... 8 The Spanish Armada... 9 The Colonization of Canada... 10 New York... 10 The Thirty Years War... 11 John Calvin... 11 Michelangelo Buonarroti... 12 Ivan the Terrible... 12 Mary Stuart, Queen of Scots... 12 Elizabeth I... 13 William Shakespeare... 13 Miguel Cervantes Saavedra... 13 The Counter-Reformation... 13 The Ottoman Wars... 14 Giordano Bruno... 14 Italy... 14 3 Early Years (1564 1588)... 17 Archimedes... 17 Aristotle... 18 Isaac Newton... 19 From Pisa to Florence and Back... 20 La Bilancetta... 22 vii
viii Contents 4 Pisa Gravitational Experiments (1589 1592)... 27 ZARM... 27 Eoetvoes and Others... 27 The Nature of Force... 28 Newton and Cavendish... 30 At the University of Pisa... 30 Criticism of Aristotle... 33 Inertia and the Galilean Principle of Relativity... 35 De Motu... 36 5 Padua Important Steps in Astronomy (1592 1610)... 39 Cosmologies... 39 Telescopes... 40 Looking at Stars... 41 Galileo in Padua... 42 Inventions... 43 Scientific Instruments... 43 The Galilean Telescope... 44 The Sidereal Messenger... 46 The Moon... 47 Fixed Stars and Milky Way... 48 Jupiter s Satellites... 48 6 Florence Discoveries and Conflicts (1610 1623)... 51 Venus... 51 Renaissance Florence... 52 Sun Spots... 54 Towards Conflict... 56 Il Saggiatore... 61 Intermediate Assessment... 65 7 Cosmological Excursions... 67 Anaximander... 68 Aristarch... 73 Eratosthenes... 74 Ptolemy... 75 Copernicus... 79 Tycho Brahe... 84 Galileo... 85 Kepler... 85 Newton... 92 Einstein... 96 Hawking... 100
Contents ix 8 Florence Revisited Dialogo and Its Consequences (1624 1633)... 105 Saint-Malo... 105 Back to Florence... 106 The Dialogo... 108 Aristotle... 109 Time... 111 Impact... 114 Inquisition... 115 The Index... 117 Galileo... 117 9 Final Years (1633 1642)... 121 Energy or its Difficulty in an Enlightened Age... 121 Seclusion... 122 Discorsi... 124 Last Efforts.... 127 10 Conclusions... 131 Time and Space Revisited... 131 René Descartes... 132 Galileo s Tangible Scientific Achievements... 135 Historical Impact... 138 11 Time Line... 143 Introduction... 143 References... 147 Index of Persons... 149 Subject Index.... 153